Journal
ACS NANO
Volume 7, Issue 5, Pages 3981-3990Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn305906z
Keywords
graphene oxide; liquid crystal; liquid crystal in organic solvent; self-assembled composite; layer-by-layer composite
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Funding
- Australian Research Council (ARC)
- ARC [DP1093952]
- ARC
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We introduce soft self-assembly of ultralarge liquid crystalline (LC) graphene oxide (GO) sheets In a wide range of organic solvents overcoming the practical limitations imposed on LC GO processing in water. This expands the number of known solvents which can support amphiphilic self-assembly to ethanol, acetone, tetrahydrofuran, N-dimethylformamide, N-cyclohexyl-2-pyrrolidone, and a number of other organic solvents, many of which were not known to afford solvophobic self-assembly prior to this report. The LC behavior of the as-prepared GO sheets in organic solvents has enabled us to disperse and organize substantial amounts of aggregate-free single-walled carbon nanotubes (SWNTs, up to 10 wt %) without compromise in LC properties. The as-prepared LC GO-SWNT dispersions were employed to achieve self-assembled layer-by-layer multifunctional 3D hybrid architectures comprising SWNTs and GO with unrivalled superior mechanical properties (Young's modulus in excess of 50 GPa and tensile strength of more than 500 MPa).
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